diff --git a/src/components/mobile/NumberPadSheet.vue b/src/components/mobile/NumberPadSheet.vue
index 1d75dcc9..aeba5855 100644
--- a/src/components/mobile/NumberPadSheet.vue
+++ b/src/components/mobile/NumberPadSheet.vue
@@ -146,6 +146,11 @@ export default {
             return `${integer}.${newDecimals}`;
         },
         inputNum(num) {
+            if (!this.previousValue && this.currentSymbol === '−') {
+                this.currentValue = '-' + this.currentValue;
+                this.currentSymbol = '';
+            }
+
             if (this.currentValue === '0') {
                 this.currentValue = num.toString();
                 return;
@@ -187,6 +192,11 @@ export default {
                 return;
             }
 
+            if (!this.previousValue && this.currentSymbol === '−') {
+                this.currentValue = '-' + this.currentValue;
+                this.currentSymbol = '';
+            }
+
             if (this.currentValue.length < 1) {
                 this.currentValue = '0';
             } else if (this.currentValue === '-') {